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no oil pressure

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Old Sep 10, 2010 | 07:10 PM
  #1  
mb2hurley's Avatar
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From: California
Car: 91 camaro rs
Engine: v6 :/
Transmission: auto
no oil pressure

ok so ill start from the beginning, before i did anything. i have a 91 camaro rs v6. it would run for about 10 mins just fine and then the oil pressure would slowly drop til 0 then died. so i ended up pullin the oil pan and found a bunch of crap on the bottom of the pan and clogged in the pick up. thick rubberish stuff, broke apart in my hand and stuff like that. cleaned it all up. from the pan, pick up and pump. put everything back together. started it, had to readjust the timing for some reason. but then fired right up. but the oil gauge is reading 0. does the motor need a few mins to get pressure back up? could i of somehow maybe disconnected a sensor? i have no idea where the oil sensor is. any other ideas?
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Old Sep 10, 2010 | 07:34 PM
  #2  
dan11288's Avatar
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Joined: Feb 2010
Posts: 10
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From: bristol, pa
Car: 91 RS
Engine: 5.0 tbi
Re: no oil pressure

oilpressure sending unit could also be clogged/ not working, on my 305 its right above oil filter its about 2 1/2 inches long and has a three prong connector to it.
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Old Sep 11, 2010 | 11:30 AM
  #3  
mb2hurley's Avatar
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From: California
Car: 91 camaro rs
Engine: v6 :/
Transmission: auto
Re: no oil pressure

is there anyway to test that? take it off and clean it? or just grab a new one
and is another way possible. to take it off then start it? oil shoots out of it then got pressure right? haha aside from the mess.
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Old Sep 11, 2010 | 12:28 PM
  #4  
transam85dudeman's Avatar
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From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: no oil pressure

did you change your oil filter?
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Old Sep 11, 2010 | 11:34 PM
  #5  
mb2hurley's Avatar
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From: California
Car: 91 camaro rs
Engine: v6 :/
Transmission: auto
Re: no oil pressure

yes, the oil filter is new
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Old Sep 13, 2010 | 12:45 AM
  #6  
mb2hurley's Avatar
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From: California
Car: 91 camaro rs
Engine: v6 :/
Transmission: auto
Re: no oil pressure

my car has no pressure at all. im wondering if. ok first i took apart the oilpump. there is a small gasket in between and i couldnt find one for it anywhere so i got that make your own gasket kinda stuff and cut one out for it. and it fit, but there was a small amount of play with the gears inside them. not to much but a little. im wondering if that gasket was to thick would cause a problem or that small amount of play would keep pressure from building. also i put a gasket between where the pump bolts up to the block. there wasnt one there when i pulled if off, but i figure anywhere where fluid is goin between to parts there should be a seal right? so would any of that keep oil from gettin in the motor?
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Old Sep 13, 2010 | 01:06 PM
  #7  
fireturd350's Avatar
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From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: no oil pressure

There might be a problem if the distributor isn't making contact with the driveshaft. Did you align it all again? I've used the copper oil pump to block gasket on my new 383. http://www.summitracing.com/parts/SUM-111480/ I have 60-70 psi at cold idle with a melling stock volume pump.

The easiest way to check oil presure without taking a chance at ruining the motor by running it would be to mark the distributor alignment, pull it, and use a priming tool and an electric drill. The priming tool goes into the distributor hole and aligns with the oil pump driveshaft, which should spin the oil pump to build up pressure. You'll usually have to spin the tool for a minute or so with a drill and you should be getting oil pressure. An old distributor that you tear apart will also work, but I find it far easier just to get a tool. http://www.summitracing.com/parts/SUM-901010/

You should be able to see oil under a valve cover or just remove an NPT plug if you can get to one easily to see if you have oil pressure. I know the NPT plug by the distributor I accidently left it off and was greeted to a 4 foot high stream of oil while priming the motor.

There may be a chance the oil pressure sender just died too. I had mine in my 350 TPI go from 30+ psi to nothing at a stop light once and it turned out that sender had failed.
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